PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-23:28:00
G02     317.5          81.2                8.5 +/-    0.42       8.6 +/-    0.42  0.030 / 0.030
G05     165.6          29.1               12.7 +/-    2.33      22.8 +/-    2.33  0.020 / 0.030
G06     40.7           44.5                8.6 +/-    0.75      11.7 +/-    0.75  0.230 / 0.200
G12     317.5          66.6                9.4 +/-    0.40      10.1 +/-    0.40  0.240 / 0.200
G17     80.7           16.9               10.4 +/-    1.96      24.6 +/-    1.96  0.060 / 0.080
G19     69.1           31.9               10.8 +/-    1.29      18.1 +/-    1.29  0.070 / 0.110
G24     232.4          26.3               13.8 +/-    2.50      26.1 +/-    2.50  0.030 / 0.050
G25     317.8          23.4                8.6 +/-    1.43      17.4 +/-    1.43  0.050 / 0.050